Temper-screw.



]. BURNS.

TEMPER SCREW.

APPLICAHON HLED Dec. 7. l9l5 l'zltvnlml M11) 2, 1916.

Z SHKETS SHEET 1- FIGJ.

FIG-2.

INVENTOR J. BURNS.

TEMPER SCREW.

APPLICATION r1150 DEC. 7. 19151 2 SHEETSSHEET Z.

Patented May 2, 1916.

y V l r V V WITNESSES JOSEPH BURNS, 0F OKMULGEE, OKLAHOMA.

Specification of Letters Patent.

Patented May 2, 1916.

Application filed December 7, 1915. Serial No. 65,510.

To all whom it may concern:

Be it known that I, JOSEPH BURNS, a citizen of the United States, and resident of Okmulgee, in the county of Okmulgee and State of Oklahoma, have invented certain new and useful Improvements in Temper- Screws, of which the following is a specification.

This invention relates to apparatus for drilling deep wells, wherein a temper screw is employed for lengthening the stroke of the tools step by step as the drilling proceeds, so that the bit will strike the bottom of the hole on each down stroke. A bar is swiveled to the lower end of the temper screw, and the drilling cable is suspended from this bar usually by means of a clamp. The'screw is rotated and thereby lowered through the split nut carriedfby the temper screw reins, and the swivel connection with the cable-supporting cross bar permits the screw to be thus turned or paid out without turning either the cable or its support.

Much ditliculty has resulted from the whirl- 1 ing of the cross bar occasioned by the twisting and untwisting of the cable under its own c nsiderable weight in addition to the very heavy tools suspended thereon. The whirling tendency is much greater with wire cable, now largely used for drilling, than with Manila cable.

The object of this invention is to provide simple and eflicient means for holding the swivel bar and the suspended cable and tools from turning or whirling without interfering with the independent rotation of the temper screw. While this result may be variously accomplished, I prefer to form the screw with an axial passage and extend therethrough a holding device which at its lower end is connected to the swivel bar, and at'its upper end is in sliding engagement with the screw supporting reins, thereby at all times locking the bar against rotation but without interfering with either the rotation of the temper screw or its vertical 'movement relatively to its support.

In the accompanying drawings, Figure 1 is a view in side elevation of the improved apparatus in position on a walking beam. Fig. 2 is a view in top plan of a portion of the beam shown in Fig. 1, illustrating the parts immediately associated with the beam. Fig. 3 is an end view of the beam together with the upper portion of the temper screw mechanism. Fig. 4 is a view partly in elevation and partly in vertical section of the temner screw and associated parts. Figs. 5 and 6 are sectional plans on lines 5-5 and 66, respectively, of F ig. 4.

Referring to the drawings, 2 designates a'walking beam of usual ing its extremity formed with the customary slot 3 to receive stem 4 of the temper Screw reins 5, the atter having flat inner faces as in Fig. 5 to form a slideway for bar 6. The under side of this bar is recessed at 7 to 1'0- construction havtatively receive the upper extremity of temper screw 8, Fig. l, the bar and screw being connected by means presently to be de scribed.

Formed integral with the upper extremity of stem 4 is cross head 9 which is disposed transversely of and is adapted to rest in notch 2 in the top face of the beam. The

opposite ends of the bar-like head 9 are disposed downwardly at 10 and slotted vrtically at 11 to receive guide pulleys 12 which are journaled therein.

Passing over these pulleys,

also pulleys 13 located rearwardly on opposite sides of the beam are the lines 14 provided at their rear ends with counterweights'15 and with their forward depending, ends secured to the extended extremities of bar 6. By this means a constant upward pull is exerted on the temper screw and when the hold of the split nut 16 carried by the reins is relaxed after the screw has been fully lowered in the operation of drilling,

the screw is automatically raised in order tomagain adjust nut 16 about its lower portion for repeating the operation. Also. by means of this construction the temper screw stem and cross head are held seated on the beam,

.thereby dispensing with meansheretofore provided at the top of the beam for retaining the same in place.

The lower extremity of screwbar 8 is enlarged at 17 to provide a seat for swivel bar 18 from which are suspended links 19 for sustaining the cable clamp 20, as is usual in this class of apparatus. Above bar 18 the screw is provided with the'usual hand bar 21 for rotating the screw and thereby lowering or paying it out from nut 16 and reins 5 as the dril ing proceeds so that on each stroke the tools will strike the bottom of the hole. The screw 8' is tubular from end to end as indicated at 22, and extending therethrough is rod 23 which is squared at its upper end at 23' to fit'thc squared aperture through the top of bar 6,

I subjecting the parts to undue wear.

the extremity of the rod being provided with nut 24. The lower extremity of the rod formed with head which is squared at 25 to enter a squared aperture in plate 26 which is relnovably secured to the depending portion 18 of swivel bar 1.8. Thus, a non-rotatable connection is provided between the swivel bar and bar 6 slid-able between reins whereby the swivel bar is prevented from whirling or rotating under the twisting and untwisting tendency of cable C. As heretofore noted, this tendency is particularly marked. with wire cables, and while the swivel bar of a Manila cable clamp may be similarly he'ld, ordinarily the whirlin tendency of such cables is not objection able, so that by simply removing plate 26 the swivel bar is released from its non-rotating connection with the temper screw reins.

The locking connection herein provided in no way interferes with the rotation of the temper screw, the latter being adapted to freely rotate at its lower end between bearing 27 interposed between head 17 and swivel bar 18, also lock bearing 28 arranged between the lower extremity of the screw and the washer-like head 29 located on rod 23 above its enlarged lower end The upper extremity of the screw freely turns in cavity 7 of bar (i.

In the absence of a non-rotatable connection between the swivel bar and temper screw reins, said bar and cable clamp 20 are whirling almost constantly in response to the twisting and untwisting tendency of the wire cable, retarding the operation and rendering it dangerous for the workmen, also The present invent-ion obviates all these difticul ties without interfering with the normal operation of the temper screw.

1 claim I Thecombinatinrr of a tubular temper screw, :1 cable support sust i iued by and swiveled to the sctiow, and llblding means extending through the tubular screw and connected to the cable support for prevent ing the latter from turuint with the screw.

2. The combination of a tubular temper screw, a screw support in threaded engagement with the screw and tlir'ough which the latter is adjustable vertically, a cable support suspended by and having a swivel connection with the screw, a holding device extending through the screw and at its lower end connected to the cable support for preventing the latter from rotating with the screw, and a vertically slidable non-rotatable connection between the upper end of the holding device and the screw support. I

3. The combination of a tubular temper screw, a support in threaded engagement with the screw and in which the latter is adjustable vertically, a cable support sustained by and having a swi el connection with the screw, a rod extending through the screw, a device slidable in the temper screw support and held by the latter against rotation and with the upper end of said rod secured to said device, and means connected to the lower end of said rod and secured to the cable support for holding the latter against rotation 4. The combination of a tubular temper screw, a tempw screw support comprising parallel reins and a nut carried by the reins through which the screw operates, a device. slidable vertically between the reins and held by the latter against rotation, the temper ,screw rotatably secured at its upper-end to said device, a rod extending throughthetemper screw and about which the latter is ad apted to rotate with the upper end of said rod held against rotation by said slidable device, a cable support sustained by and having a swivel cmmection with the. lower end of the screw, and means connected to the lower 'end of'said rod and secured to the cable support for holding the latter against rotatio'n.

In testimony whereof I afiix my signa ture in presence of two witnesses.

JOSEPH BURNS.

Witnesses A. E. VVoonARo, A. O. KENNEDY. 

